我有一个带长字符串的UITextView.文本视图大小由autolayout确定,并设置为tail截断文本.它看起来像这样：
如何确定显示的字符串范围和截断的范围？
解决方法
试试这个
class ViewController: UIViewController,NSLayoutManagerDelegate{
@IBOutlet weak var textView: UITextView!
var range :NSRange!
override func viewDidLoad() {
super.viewDidLoad()
textView.textContainer.layoutManager?.delegate = self
let str = textView.text as NSString
//Regardless of the repeated string
range = str.rangeOfString("cillium adipisicing")
print(range)
}
// Invoked while determining the soft line break point. When NO,NSLayoutManager tries to find the next line break opportunity before charIndex
func layoutManager(layoutManager: NSLayoutManager,shouldBreakLineByWordBeforeCharacterAtIndex charIndex: Int) -> Bool{
// charIndex is in the string or not
if range.location != NSNotFound && NSLocationInRange(charIndex,NSRange(location: range.location + 1,length: range.length - 1 )) {
print("range of string is truncated -> charIndex is \(charIndex)")
}
return true
}
}
但是如果单词没有“”且截断,则charIndex为0,则仅限于BreakLineByWord
希望它有用:)
